Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 511 · 40 questions

What you do (Only the length matters): 1. Tie the nut to the string and hang it from the taped pencil, 30 cm long. 2. Pull it a little to one side and let go — do not push. 3. Time 10 swings and divide by 10. 4. Change only the string length (60 cm), time 10 swings again, and stand back from the bob.

1. 1.🧺 Do we need a mirror for the pendulum? (a) needed (b) not needed
2. 2.True or false: a battery cell is not needed for the pendulum. (a) False (b) True
3. 3.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a pencil and tape (c) a balloon (d) a string
4. 4.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) it cannot swing (b) about the same (c) much faster (d) much slower
5. 5.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the string length”? (a) we keep it the same (b) we change it (c) we measure it
6. 6.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
7. 7.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it stays the same (b) it halves (c) it doubles (d) it becomes 4 times
8. 8.🧺 Do we need a magnet for the pendulum? (a) needed (b) not needed
9. 9.🧺 Do we need turmeric powder for the pendulum? (a) needed (b) not needed
10. 10.🧺 Do we need a battery cell for the pendulum? (a) needed (b) not needed
11. 11.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is the one thing we change? (a) the same hook (b) the weight of the bob (c) the string length (d) time for 10 swings
12. 12.True or false: a string is needed for the pendulum. (a) False (b) True
13. 13.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a pencil and tape (c) a magnet (d) turmeric powder
14. 14.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a pencil and tape (c) yeast (d) a ruler
15. 15.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed
16. 16.🧺 Do we need a balloon for the pendulum? (a) not needed (b) needed
17. 17.🕰️ Which old clock uses a pendulum to keep time? (a) a digital watch (b) a sundial (c) a grandfather clock (d) a phone
18. 18.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 60 seconds?
19. 19.🛟 Why should you stand back from a swinging pendulum? (a) it is magnetic (b) it is hot (c) it is wet (d) the bob could hit you
20. 20.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a stopwatch (c) a battery cell (d) a string
21. 21.🔮 Predict: you make the string shorter. The swings get ___. (a) heavier (b) stopped (c) slower (d) quicker
22. 22.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the same hook”? (a) we measure it (b) we keep it the same (c) we change it
23. 23.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is what we measure. (a) False (b) True
24. 24.🧺 Which of these is not needed for the pendulum? (a) a string (b) a stopwatch (c) a pencil and tape (d) a magnet
25. 25.🕰️ Does a heavier bob change the swing time? (a) no, hardly at all (b) yes, much slower (c) it stops swinging (d) yes, much faster
26. 26.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) a string (c) a mirror (d) turmeric powder
27. 27.🧺 Do we need a stopwatch for the pendulum? (a) not needed (b) needed
28. 28.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a magnet (b) a stopwatch (c) a string (d) a ruler
29. 29.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the weight of the bob”? (a) we measure it (b) we change it (c) we keep it the same
30. 30.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: how far we pull it back is the one thing we change. (a) False (b) True
31. 31.🛟 What is a safe bob for a home pendulum? (a) a glass bottle (b) a small nut or washer (c) a sharp tool (d) a heavy brick
32. 32.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “how far we pull it back”? (a) we measure it (b) we keep it the same (c) we change it
33. 33.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) time for 10 swings (b) the string length (c) the same hook
34. 34.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) how far we pull it back (b) the string length (c) the weight of the bob (d) time for 10 swings
35. 35.True or false: a magnet is needed for the pendulum. (a) False (b) True
36. 36.🧺 Do we need a ruler for the pendulum? (a) needed (b) not needed
37. 37.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 4 seconds?
38. 38.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “time for 10 swings”? (a) we measure it (b) we change it (c) we keep it the same
39. 39.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) yeast (c) a stopwatch (d) turmeric powder
40. 40.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is kept the same. (a) True (b) False

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